Method for hydraulic rupturing of downhole glass disc
US7661480B2 · kind B2 · utility
77Cited by
22References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2008 |
| Grant date | Feb 16, 2010 |
| Priority date | — |
| Expiry date | Aug 13, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/063
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for rupturing a glass disc in a well completion tool located downhole in a section of production tubing includes providing a wellhead isolation tool, or tree saver, to isolate the wellhead Christmas tree, adding a pressurized fluid to the tubing/casing annulus and pumping a disc rupturing fluid into the production tubing via the tree saver until the disc is ruptured. Following rupture, the pump can be rapidly stopped, or slowed, and started to create a water hammer effect that removes any glass shards remaining in the disc holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.